From b1888f4f08621f5f24e29878db940c9f2b8a922c Mon Sep 17 00:00:00 2001 From: JBD Date: Mon, 13 Sep 2021 10:14:34 -0700 Subject: [PATCH] Initial commit This change introduces a Prometheus exporter to publish ECS metrics in the Prometheus exposition format. The ecs_exporter reads the ECS metadata server to read ECS task and container stats. This is why the exporter needs to run as a sidecar container in an ECS task, or it should be included as a binary in a container deployed to be able to fetch from the metadata server. The exporter publishes metrics from the container runtime related to CPU usage, networking and more. Users still need to publish their custom application metrics from their own containers if they have any. Currently, these metrics are available from CloudWatch and can be ingested into Prometheus by using the cloudwatch_exporter, but there are various users who want to be able to directly export them to Prometheus to avoid delay in data collection. In the future, the exporter will report more CPU, memory, and I/O metrics. Fixes prometheus-community/community#36. Signed-off-by: JBD --- Dockerfile | 12 ++ Makefile | 10 ++ Makefile.common | 317 ++++++++++++++++++++++++++++++++++++++ README.md | 162 +++++++++++++++++++ VERSION | 1 + ecscollector/collector.go | 216 ++++++++++++++++++++++++++ ecsmetadata/client.go | 198 ++++++++++++++++++++++++ go.mod | 8 + go.sum | 181 ++++++++++++++++++++++ main.go | 49 ++++++ 10 files changed, 1154 insertions(+) create mode 100644 Dockerfile create mode 100644 Makefile create mode 100644 Makefile.common create mode 100644 README.md create mode 100644 VERSION create mode 100644 ecscollector/collector.go create mode 100644 ecsmetadata/client.go create mode 100644 go.mod create mode 100644 go.sum create mode 100644 main.go diff --git a/Dockerfile b/Dockerfile new file mode 100644 index 0000000..6897188 --- /dev/null +++ b/Dockerfile @@ -0,0 +1,12 @@ +ARG ARCH="amd64" +ARG OS="linux" +FROM quay.io/prometheus/busybox-${OS}-${ARCH}:latest +LABEL maintainer="The Prometheus Authors " + +ARG ARCH="amd64" +ARG OS="linux" +COPY .build/${OS}-${ARCH}/ecs_exporter /bin/ecs_exporter + +EXPOSE 9779 +USER nobody +ENTRYPOINT [ "/bin/ecs_exporter" ] diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..86f317b --- /dev/null +++ b/Makefile @@ -0,0 +1,10 @@ +# Ensure that 'all' is the default target otherwise it will be the first target from Makefile.common. +all:: + +# Needs to be defined before including Makefile.common to auto-generate targets +DOCKER_ARCHS ?= amd64 arm64 +DOCKER_REPO ?= prometheuscommunity + +include Makefile.common + +DOCKER_IMAGE_NAME ?= ecs-exporter diff --git a/Makefile.common b/Makefile.common new file mode 100644 index 0000000..99e8f9f --- /dev/null +++ b/Makefile.common @@ -0,0 +1,317 @@ +# Copyright 2018 The Prometheus Authors +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + + +# A common Makefile that includes rules to be reused in different prometheus projects. +# !!! Open PRs only against the prometheus/prometheus/Makefile.common repository! + +# Example usage : +# Create the main Makefile in the root project directory. +# include Makefile.common +# customTarget: +# @echo ">> Running customTarget" +# + +# Ensure GOBIN is not set during build so that promu is installed to the correct path +unexport GOBIN + +GO ?= go +GOFMT ?= $(GO)fmt +FIRST_GOPATH := $(firstword $(subst :, ,$(shell $(GO) env GOPATH))) +GOOPTS ?= +GOHOSTOS ?= $(shell $(GO) env GOHOSTOS) +GOHOSTARCH ?= $(shell $(GO) env GOHOSTARCH) + +GO_VERSION ?= $(shell $(GO) version) +GO_VERSION_NUMBER ?= $(word 3, $(GO_VERSION)) +PRE_GO_111 ?= $(shell echo $(GO_VERSION_NUMBER) | grep -E 'go1\.(10|[0-9])\.') + +GOVENDOR := +GO111MODULE := +ifeq (, $(PRE_GO_111)) + ifneq (,$(wildcard go.mod)) + # Enforce Go modules support just in case the directory is inside GOPATH (and for Travis CI). + GO111MODULE := on + + ifneq (,$(wildcard vendor)) + # Always use the local vendor/ directory to satisfy the dependencies. + GOOPTS := $(GOOPTS) -mod=vendor + endif + endif +else + ifneq (,$(wildcard go.mod)) + ifneq (,$(wildcard vendor)) +$(warning This repository requires Go >= 1.11 because of Go modules) +$(warning Some recipes may not work as expected as the current Go runtime is '$(GO_VERSION_NUMBER)') + endif + else + # This repository isn't using Go modules (yet). + GOVENDOR := $(FIRST_GOPATH)/bin/govendor + endif +endif +PROMU := $(FIRST_GOPATH)/bin/promu +pkgs = ./... + +ifeq (arm, $(GOHOSTARCH)) + GOHOSTARM ?= $(shell GOARM= $(GO) env GOARM) + GO_BUILD_PLATFORM ?= $(GOHOSTOS)-$(GOHOSTARCH)v$(GOHOSTARM) +else + GO_BUILD_PLATFORM ?= $(GOHOSTOS)-$(GOHOSTARCH) +endif + +GOTEST := $(GO) test +GOTEST_DIR := +ifneq ($(CIRCLE_JOB),) +ifneq ($(shell which gotestsum),) + GOTEST_DIR := test-results + GOTEST := gotestsum --junitfile $(GOTEST_DIR)/unit-tests.xml -- +endif +endif + +PROMU_VERSION ?= 0.12.0 +PROMU_URL := https://github.com/prometheus/promu/releases/download/v$(PROMU_VERSION)/promu-$(PROMU_VERSION).$(GO_BUILD_PLATFORM).tar.gz + +GOLANGCI_LINT := +GOLANGCI_LINT_OPTS ?= +GOLANGCI_LINT_VERSION ?= v1.42.0 +# golangci-lint only supports linux, darwin and windows platforms on i386/amd64. +# windows isn't included here because of the path separator being different. +ifeq ($(GOHOSTOS),$(filter $(GOHOSTOS),linux darwin)) + ifeq ($(GOHOSTARCH),$(filter $(GOHOSTARCH),amd64 i386)) + # If we're in CI and there is an Actions file, that means the linter + # is being run in Actions, so we don't need to run it here. + ifeq (,$(CIRCLE_JOB)) + GOLANGCI_LINT := $(FIRST_GOPATH)/bin/golangci-lint + else ifeq (,$(wildcard .github/workflows/golangci-lint.yml)) + GOLANGCI_LINT := $(FIRST_GOPATH)/bin/golangci-lint + endif + endif +endif + +PREFIX ?= $(shell pwd) +BIN_DIR ?= $(shell pwd) +DOCKER_IMAGE_TAG ?= $(subst /,-,$(shell git rev-parse --abbrev-ref HEAD)) +DOCKERFILE_PATH ?= ./Dockerfile +DOCKERBUILD_CONTEXT ?= ./ +DOCKER_REPO ?= prom + +DOCKER_ARCHS ?= amd64 + +BUILD_DOCKER_ARCHS = $(addprefix common-docker-,$(DOCKER_ARCHS)) +PUBLISH_DOCKER_ARCHS = $(addprefix common-docker-publish-,$(DOCKER_ARCHS)) +TAG_DOCKER_ARCHS = $(addprefix common-docker-tag-latest-,$(DOCKER_ARCHS)) + +ifeq ($(GOHOSTARCH),amd64) + ifeq ($(GOHOSTOS),$(filter $(GOHOSTOS),linux freebsd darwin windows)) + # Only supported on amd64 + test-flags := -race + endif +endif + +# This rule is used to forward a target like "build" to "common-build". This +# allows a new "build" target to be defined in a Makefile which includes this +# one and override "common-build" without override warnings. +%: common-% ; + +.PHONY: common-all +common-all: precheck style check_license lint yamllint unused build test + +.PHONY: common-style +common-style: + @echo ">> checking code style" + @fmtRes=$$($(GOFMT) -d $$(find . -path ./vendor -prune -o -name '*.go' -print)); \ + if [ -n "$${fmtRes}" ]; then \ + echo "gofmt checking failed!"; echo "$${fmtRes}"; echo; \ + echo "Please ensure you are using $$($(GO) version) for formatting code."; \ + exit 1; \ + fi + +.PHONY: common-check_license +common-check_license: + @echo ">> checking license header" + @licRes=$$(for file in $$(find . -type f -iname '*.go' ! -path './vendor/*') ; do \ + awk 'NR<=3' $$file | grep -Eq "(Copyright|generated|GENERATED)" || echo $$file; \ + done); \ + if [ -n "$${licRes}" ]; then \ + echo "license header checking failed:"; echo "$${licRes}"; \ + exit 1; \ + fi + +.PHONY: common-deps +common-deps: + @echo ">> getting dependencies" +ifdef GO111MODULE + GO111MODULE=$(GO111MODULE) $(GO) mod download +else + $(GO) get $(GOOPTS) -t ./... +endif + +.PHONY: update-go-deps +update-go-deps: + @echo ">> updating Go dependencies" + @for m in $$($(GO) list -mod=readonly -m -f '{{ if and (not .Indirect) (not .Main)}}{{.Path}}{{end}}' all); do \ + $(GO) get $$m; \ + done + GO111MODULE=$(GO111MODULE) $(GO) mod tidy +ifneq (,$(wildcard vendor)) + GO111MODULE=$(GO111MODULE) $(GO) mod vendor +endif + +.PHONY: common-test-short +common-test-short: $(GOTEST_DIR) + @echo ">> running short tests" + GO111MODULE=$(GO111MODULE) $(GOTEST) -short $(GOOPTS) $(pkgs) + +.PHONY: common-test +common-test: $(GOTEST_DIR) + @echo ">> running all tests" + GO111MODULE=$(GO111MODULE) $(GOTEST) $(test-flags) $(GOOPTS) $(pkgs) + +$(GOTEST_DIR): + @mkdir -p $@ + +.PHONY: common-format +common-format: + @echo ">> formatting code" + GO111MODULE=$(GO111MODULE) $(GO) fmt $(pkgs) + +.PHONY: common-vet +common-vet: + @echo ">> vetting code" + GO111MODULE=$(GO111MODULE) $(GO) vet $(GOOPTS) $(pkgs) + +.PHONY: common-lint +common-lint: $(GOLANGCI_LINT) +ifdef GOLANGCI_LINT + @echo ">> running golangci-lint" +ifdef GO111MODULE +# 'go list' needs to be executed before staticcheck to prepopulate the modules cache. +# Otherwise staticcheck might fail randomly for some reason not yet explained. + GO111MODULE=$(GO111MODULE) $(GO) list -e -compiled -test=true -export=false -deps=true -find=false -tags= -- ./... > /dev/null + GO111MODULE=$(GO111MODULE) $(GOLANGCI_LINT) run $(GOLANGCI_LINT_OPTS) $(pkgs) +else + $(GOLANGCI_LINT) run $(pkgs) +endif +endif + +.PHONY: common-yamllint +common-yamllint: + @echo ">> running yamllint on all YAML files in the repository" +ifeq (, $(shell which yamllint)) + @echo "yamllint not installed so skipping" +else + yamllint . +endif + +# For backward-compatibility. +.PHONY: common-staticcheck +common-staticcheck: lint + +.PHONY: common-unused +common-unused: $(GOVENDOR) +ifdef GOVENDOR + @echo ">> running check for unused packages" + @$(GOVENDOR) list +unused | grep . && exit 1 || echo 'No unused packages' +else +ifdef GO111MODULE + @echo ">> running check for unused/missing packages in go.mod" + GO111MODULE=$(GO111MODULE) $(GO) mod tidy +ifeq (,$(wildcard vendor)) + @git diff --exit-code -- go.sum go.mod +else + @echo ">> running check for unused packages in vendor/" + GO111MODULE=$(GO111MODULE) $(GO) mod vendor + @git diff --exit-code -- go.sum go.mod vendor/ +endif +endif +endif + +.PHONY: common-build +common-build: promu + @echo ">> building binaries" + GO111MODULE=$(GO111MODULE) $(PROMU) build --prefix $(PREFIX) $(PROMU_BINARIES) + +.PHONY: common-tarball +common-tarball: promu + @echo ">> building release tarball" + $(PROMU) tarball --prefix $(PREFIX) $(BIN_DIR) + +.PHONY: common-docker $(BUILD_DOCKER_ARCHS) +common-docker: $(BUILD_DOCKER_ARCHS) +$(BUILD_DOCKER_ARCHS): common-docker-%: + docker build -t "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME)-linux-$*:$(DOCKER_IMAGE_TAG)" \ + -f $(DOCKERFILE_PATH) \ + --build-arg ARCH="$*" \ + --build-arg OS="linux" \ + $(DOCKERBUILD_CONTEXT) + +.PHONY: common-docker-publish $(PUBLISH_DOCKER_ARCHS) +common-docker-publish: $(PUBLISH_DOCKER_ARCHS) +$(PUBLISH_DOCKER_ARCHS): common-docker-publish-%: + docker push "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME)-linux-$*:$(DOCKER_IMAGE_TAG)" + +DOCKER_MAJOR_VERSION_TAG = $(firstword $(subst ., ,$(shell cat VERSION))) +.PHONY: common-docker-tag-latest $(TAG_DOCKER_ARCHS) +common-docker-tag-latest: $(TAG_DOCKER_ARCHS) +$(TAG_DOCKER_ARCHS): common-docker-tag-latest-%: + docker tag "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME)-linux-$*:$(DOCKER_IMAGE_TAG)" "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME)-linux-$*:latest" + docker tag "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME)-linux-$*:$(DOCKER_IMAGE_TAG)" "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME)-linux-$*:v$(DOCKER_MAJOR_VERSION_TAG)" + +.PHONY: common-docker-manifest +common-docker-manifest: + DOCKER_CLI_EXPERIMENTAL=enabled docker manifest create -a "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME):$(DOCKER_IMAGE_TAG)" $(foreach ARCH,$(DOCKER_ARCHS),$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME)-linux-$(ARCH):$(DOCKER_IMAGE_TAG)) + DOCKER_CLI_EXPERIMENTAL=enabled docker manifest push "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME):$(DOCKER_IMAGE_TAG)" + +.PHONY: promu +promu: $(PROMU) + +$(PROMU): + $(eval PROMU_TMP := $(shell mktemp -d)) + curl -s -L $(PROMU_URL) | tar -xvzf - -C $(PROMU_TMP) + mkdir -p $(FIRST_GOPATH)/bin + cp $(PROMU_TMP)/promu-$(PROMU_VERSION).$(GO_BUILD_PLATFORM)/promu $(FIRST_GOPATH)/bin/promu + rm -r $(PROMU_TMP) + +.PHONY: proto +proto: + @echo ">> generating code from proto files" + @./scripts/genproto.sh + +ifdef GOLANGCI_LINT +$(GOLANGCI_LINT): + mkdir -p $(FIRST_GOPATH)/bin + curl -sfL https://raw.githubusercontent.com/golangci/golangci-lint/$(GOLANGCI_LINT_VERSION)/install.sh \ + | sed -e '/install -d/d' \ + | sh -s -- -b $(FIRST_GOPATH)/bin $(GOLANGCI_LINT_VERSION) +endif + +ifdef GOVENDOR +.PHONY: $(GOVENDOR) +$(GOVENDOR): + GOOS= GOARCH= $(GO) get -u github.com/kardianos/govendor +endif + +.PHONY: precheck +precheck:: + +define PRECHECK_COMMAND_template = +precheck:: $(1)_precheck + +PRECHECK_COMMAND_$(1) ?= $(1) $$(strip $$(PRECHECK_OPTIONS_$(1))) +.PHONY: $(1)_precheck +$(1)_precheck: + @if ! $$(PRECHECK_COMMAND_$(1)) 1>/dev/null 2>&1; then \ + echo "Execution of '$$(PRECHECK_COMMAND_$(1))' command failed. Is $(1) installed?"; \ + exit 1; \ + fi +endef diff --git a/README.md b/README.md new file mode 100644 index 0000000..7266273 --- /dev/null +++ b/README.md @@ -0,0 +1,162 @@ +# ecs_prometheus_exporter + +🚧 🚧 🚧 This repo is still work in progress and is subject to change. + +This repo contains a Prometheus exporter for +Amazon Elastic Container Service (ECS) that publishes +ECS task infra metrics in Prometheus format. + +You need to run it as a sidecar on your ECS tasks. + +By default, it publishes Prometheus metrics on ":9779/metrics". The exporter in this repo can be a useful complementary sidecar for the scenario described in [this blog post](https://aws.amazon.com/blogs/opensource/metrics-collection-from-amazon-ecs-using-amazon-managed-service-for-prometheus/). Adding this sidecar to the ECS task definition would export task-level metrics in addition to the custom metrics described in the blog. + +The sidecar process is also supported on [AWS App Runner](https://aws.amazon.com/apprunner/) +and can be used to publish infra metrics in Prometheus format +from App Runner services. + +## Labels + +* **container**: Container associated with a metric. +* **cpu**: Available to CPU metrics, helps to breakdown metrics by CPU. +* **device**: Network interface device associated with the metric. Only + available for several network metrics. + +## Example output + +``` +# HELP ecs_cpu_seconds_total Total CPU usage in seconds. +# TYPE ecs_cpu_seconds_total counter +ecs_cpu_seconds_total{container="ecs-metadata-proxy",cpu="0"} 1.746774278e+08 +ecs_cpu_seconds_total{container="ecs-metadata-proxy",cpu="1"} 1.7417992266e+08 +# HELP ecs_memory_bytes Memory usage in bytes. +# TYPE ecs_memory_bytes gauge +ecs_memory_bytes{container="ecs-metadata-proxy"} 4.440064e+06 +# HELP ecs_memory_limit_bytes Memory limit in bytes. +# TYPE ecs_memory_limit_bytes gauge +ecs_memory_limit_bytes{container="ecs-metadata-proxy"} 9.223372036854772e+18 +# HELP ecs_memory_max_bytes Maximum memory usage in bytes. +# TYPE ecs_memory_max_bytes gauge +ecs_memory_max_bytes{container="ecs-metadata-proxy"} 9.023488e+06 +# HELP ecs_network_receive_bytes_total Network recieved in bytes. +# TYPE ecs_network_receive_bytes_total counter +ecs_network_receive_bytes_total{container="ecs-metadata-proxy",device="eth1"} 4.2851757e+07 +# HELP ecs_network_receive_dropped_total Network packets dropped in recieving. +# TYPE ecs_network_receive_dropped_total counter +ecs_network_receive_dropped_total{container="ecs-metadata-proxy",device="eth1"} 0 +# HELP ecs_network_receive_errors_total Network errors in recieving. +# TYPE ecs_network_receive_errors_total counter +ecs_network_receive_errors_total{container="ecs-metadata-proxy",device="eth1"} 0 +# HELP ecs_network_receive_packets_total Network packets recieved. +# TYPE ecs_network_receive_packets_total counter +ecs_network_receive_packets_total{container="ecs-metadata-proxy",device="eth1"} 516239 +# HELP ecs_network_transmit_bytes_total Network transmitted in bytes. +# TYPE ecs_network_transmit_bytes_total counter +ecs_network_transmit_bytes_total{container="ecs-metadata-proxy",device="eth1"} 1.28412758e+08 +# HELP ecs_network_transmit_dropped_total Network packets dropped in transmit. +# TYPE ecs_network_transmit_dropped_total counter +ecs_network_transmit_dropped_total{container="ecs-metadata-proxy",device="eth1"} 0 +# HELP ecs_network_transmit_errors_total Network errors in transmit. +# TYPE ecs_network_transmit_errors_total counter +ecs_network_transmit_errors_total{container="ecs-metadata-proxy",device="eth1"} 0 +# HELP ecs_network_transmit_packets_total Network packets transmitted. +# TYPE ecs_network_transmit_packets_total counter +ecs_network_transmit_packets_total{container="ecs-metadata-proxy",device="eth1"} 429472 +# HELP go_gc_duration_seconds A summary of the pause duration of garbage collection cycles. +# TYPE go_gc_duration_seconds summary +go_gc_duration_seconds{quantile="0"} 0 +go_gc_duration_seconds{quantile="0.25"} 0 +go_gc_duration_seconds{quantile="0.5"} 0 +go_gc_duration_seconds{quantile="0.75"} 0 +go_gc_duration_seconds{quantile="1"} 0 +go_gc_duration_seconds_sum 0 +go_gc_duration_seconds_count 0 +# HELP go_goroutines Number of goroutines that currently exist. +# TYPE go_goroutines gauge +go_goroutines 8 +# HELP go_info Information about the Go environment. +# TYPE go_info gauge +go_info{version="go1.16.3"} 1 +# HELP go_memstats_alloc_bytes Number of bytes allocated and still in use. +# TYPE go_memstats_alloc_bytes gauge +go_memstats_alloc_bytes 595760 +# HELP go_memstats_alloc_bytes_total Total number of bytes allocated, even if freed. +# TYPE go_memstats_alloc_bytes_total counter +go_memstats_alloc_bytes_total 595760 +# HELP go_memstats_buck_hash_sys_bytes Number of bytes used by the profiling bucket hash table. +# TYPE go_memstats_buck_hash_sys_bytes gauge +go_memstats_buck_hash_sys_bytes 4092 +# HELP go_memstats_frees_total Total number of frees. +# TYPE go_memstats_frees_total counter +go_memstats_frees_total 123 +# HELP go_memstats_gc_cpu_fraction The fraction of this program's available CPU time used by the GC since the program started. +# TYPE go_memstats_gc_cpu_fraction gauge +go_memstats_gc_cpu_fraction 0 +# HELP go_memstats_gc_sys_bytes Number of bytes used for garbage collection system metadata. +# TYPE go_memstats_gc_sys_bytes gauge +go_memstats_gc_sys_bytes 3.97448e+06 +# HELP go_memstats_heap_alloc_bytes Number of heap bytes allocated and still in use. +# TYPE go_memstats_heap_alloc_bytes gauge +go_memstats_heap_alloc_bytes 595760 +# HELP go_memstats_heap_idle_bytes Number of heap bytes waiting to be used. +# TYPE go_memstats_heap_idle_bytes gauge +go_memstats_heap_idle_bytes 6.508544e+07 +# HELP go_memstats_heap_inuse_bytes Number of heap bytes that are in use. +# TYPE go_memstats_heap_inuse_bytes gauge +go_memstats_heap_inuse_bytes 1.59744e+06 +# HELP go_memstats_heap_objects Number of allocated objects. +# TYPE go_memstats_heap_objects gauge +go_memstats_heap_objects 2439 +# HELP go_memstats_heap_released_bytes Number of heap bytes released to OS. +# TYPE go_memstats_heap_released_bytes gauge +go_memstats_heap_released_bytes 6.508544e+07 +# HELP go_memstats_heap_sys_bytes Number of heap bytes obtained from system. +# TYPE go_memstats_heap_sys_bytes gauge +go_memstats_heap_sys_bytes 6.668288e+07 +# HELP go_memstats_last_gc_time_seconds Number of seconds since 1970 of last garbage collection. +# TYPE go_memstats_last_gc_time_seconds gauge +go_memstats_last_gc_time_seconds 0 +# HELP go_memstats_lookups_total Total number of pointer lookups. +# TYPE go_memstats_lookups_total counter +go_memstats_lookups_total 0 +# HELP go_memstats_mallocs_total Total number of mallocs. +# TYPE go_memstats_mallocs_total counter +go_memstats_mallocs_total 2562 +# HELP go_memstats_mcache_inuse_bytes Number of bytes in use by mcache structures. +# TYPE go_memstats_mcache_inuse_bytes gauge +go_memstats_mcache_inuse_bytes 9600 +# HELP go_memstats_mcache_sys_bytes Number of bytes used for mcache structures obtained from system. +# TYPE go_memstats_mcache_sys_bytes gauge +go_memstats_mcache_sys_bytes 16384 +# HELP go_memstats_mspan_inuse_bytes Number of bytes in use by mspan structures. +# TYPE go_memstats_mspan_inuse_bytes gauge +go_memstats_mspan_inuse_bytes 37400 +# HELP go_memstats_mspan_sys_bytes Number of bytes used for mspan structures obtained from system. +# TYPE go_memstats_mspan_sys_bytes gauge +go_memstats_mspan_sys_bytes 49152 +# HELP go_memstats_next_gc_bytes Number of heap bytes when next garbage collection will take place. +# TYPE go_memstats_next_gc_bytes gauge +go_memstats_next_gc_bytes 4.473924e+06 +# HELP go_memstats_other_sys_bytes Number of bytes used for other system allocations. +# TYPE go_memstats_other_sys_bytes gauge +go_memstats_other_sys_bytes 497348 +# HELP go_memstats_stack_inuse_bytes Number of bytes in use by the stack allocator. +# TYPE go_memstats_stack_inuse_bytes gauge +go_memstats_stack_inuse_bytes 425984 +# HELP go_memstats_stack_sys_bytes Number of bytes obtained from system for stack allocator. +# TYPE go_memstats_stack_sys_bytes gauge +go_memstats_stack_sys_bytes 425984 +# HELP go_memstats_sys_bytes Number of bytes obtained from system. +# TYPE go_memstats_sys_bytes gauge +go_memstats_sys_bytes 7.165032e+07 +# HELP go_threads Number of OS threads created. +# TYPE go_threads gauge +go_threads 7 +# HELP promhttp_metric_handler_requests_in_flight Current number of scrapes being served. +# TYPE promhttp_metric_handler_requests_in_flight gauge +promhttp_metric_handler_requests_in_flight 1 +# HELP promhttp_metric_handler_requests_total Total number of scrapes by HTTP status code. +# TYPE promhttp_metric_handler_requests_total counter +promhttp_metric_handler_requests_total{code="200"} 0 +promhttp_metric_handler_requests_total{code="500"} 0 +promhttp_metric_handler_requests_total{code="503"} 0 +``` diff --git a/VERSION b/VERSION new file mode 100644 index 0000000..6e8bf73 --- /dev/null +++ b/VERSION @@ -0,0 +1 @@ +0.1.0 diff --git a/ecscollector/collector.go b/ecscollector/collector.go new file mode 100644 index 0000000..45d16ba --- /dev/null +++ b/ecscollector/collector.go @@ -0,0 +1,216 @@ +// Copyright 2021 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package ecscollector implements a Prometheus collector for Amazon ECS +// metrics available at the ECS metadata server. +package ecscollector + +import ( + "context" + "fmt" + "log" + + "github.com/prometheus-community/ecs_exporter/ecsmetadata" + "github.com/prometheus/client_golang/prometheus" + "github.com/tklauser/go-sysconf" +) + +var ( + cpuTotalDesc = prometheus.NewDesc( + "ecs_cpu_seconds_total", + "Total CPU usage in seconds.", + cpuLabels, nil) + + memUsageDesc = prometheus.NewDesc( + "ecs_memory_bytes", + "Memory usage in bytes.", + labels, nil) + + memMaxUsageDesc = prometheus.NewDesc( + "ecs_memory_max_bytes", + "Maximum memory usage in bytes.", + labels, nil) + + memLimitDesc = prometheus.NewDesc( + "ecs_memory_limit_bytes", + "Memory limit in bytes.", + labels, nil) + + networkRxBytesDesc = prometheus.NewDesc( + "ecs_network_receive_bytes_total", + "Network recieved in bytes.", + networkLabels, nil) + + networkRxPacketsDesc = prometheus.NewDesc( + "ecs_network_receive_packets_total", + "Network packets recieved.", + networkLabels, nil) + + networkRxDroppedDesc = prometheus.NewDesc( + "ecs_network_receive_dropped_total", + "Network packets dropped in recieving.", + networkLabels, nil) + + networkRxErrorsDesc = prometheus.NewDesc( + "ecs_network_receive_errors_total", + "Network errors in recieving.", + networkLabels, nil) + + networkTxBytesDesc = prometheus.NewDesc( + "ecs_network_transmit_bytes_total", + "Network transmitted in bytes.", + networkLabels, nil) + + networkTxPacketsDesc = prometheus.NewDesc( + "ecs_network_transmit_packets_total", + "Network packets transmitted.", + networkLabels, nil) + + networkTxDroppedDesc = prometheus.NewDesc( + "ecs_network_transmit_dropped_total", + "Network packets dropped in transmit.", + networkLabels, nil) + + networkTxErrorsDesc = prometheus.NewDesc( + "ecs_network_transmit_errors_total", + "Network errors in transmit.", + networkLabels, nil) +) + +var labels = []string{ + "container", +} + +var cpuLabels = append( + labels, + "cpu", +) + +var networkLabels = append( + labels, + "device", +) + +// NewCollector returns a new Collector that queries ECS metadata server +// for ECS task and container metrics. +func NewCollector(client *ecsmetadata.Client) prometheus.Collector { + return &collector{client: client} +} + +type collector struct { + client *ecsmetadata.Client +} + +func (c *collector) Describe(ch chan<- *prometheus.Desc) { + ch <- cpuTotalDesc + ch <- memUsageDesc + ch <- memMaxUsageDesc + ch <- memLimitDesc + ch <- networkRxBytesDesc + ch <- networkRxPacketsDesc + ch <- networkRxDroppedDesc + ch <- networkRxErrorsDesc + ch <- networkTxBytesDesc + ch <- networkTxPacketsDesc + ch <- networkTxDroppedDesc + ch <- networkTxErrorsDesc +} + +func (c *collector) Collect(ch chan<- prometheus.Metric) { + ctx := context.Background() + metadata, err := c.client.RetrieveTaskMetadata(ctx) + if err != nil { + log.Printf("Failed to retrieve metadata: %v", err) + return + } + stats, err := c.client.RetrieveTaskStats(ctx) + if err != nil { + log.Printf("Failed to retrieve container stats: %v", err) + return + } + for _, container := range metadata.Containers { + s := stats[container.DockerID] + if s == nil { + log.Printf("Couldn't find container with ID %q in stats", container.DockerID) + continue + } + + labelVals := []string{ + container.Name, + } + + for i, cpuUsage := range s.CPUStats.CPUUsage.PerCPUUsage { + cpu := fmt.Sprintf("%d", i) + ch <- prometheus.MustNewConstMetric( + cpuTotalDesc, + prometheus.CounterValue, + cpuJiffiesToSeconds(cpuUsage), + append(labelVals, cpu)..., + ) + } + + for desc, value := range map[*prometheus.Desc]float64{ + memUsageDesc: s.MemoryStats.Usage, + memMaxUsageDesc: s.MemoryStats.MaxUsage, + memLimitDesc: s.MemoryStats.Limit, + } { + ch <- prometheus.MustNewConstMetric( + desc, + prometheus.GaugeValue, + value, + labelVals..., + ) + } + + // Network metrics per inteface. + for iface, netStats := range s.Networks { + networkLabelVals := append(labelVals, iface) + + for desc, value := range map[*prometheus.Desc]float64{ + networkRxBytesDesc: netStats.RxBytes, + networkRxPacketsDesc: netStats.RxPackets, + networkRxDroppedDesc: netStats.RxDropped, + networkRxErrorsDesc: netStats.RxErrors, + networkTxBytesDesc: netStats.TxBytes, + networkTxPacketsDesc: netStats.TxPackets, + networkTxDroppedDesc: netStats.TxDropped, + networkTxErrorsDesc: netStats.TxErrors, + } { + ch <- prometheus.MustNewConstMetric( + desc, + prometheus.CounterValue, + value, + networkLabelVals..., + ) + } + } + } +} + +// cpuJiffiesToSeconds converts CPU metrics +// in jiffies to seconds. +func cpuJiffiesToSeconds(j float64) float64 { + return j / float64(clockTick) +} + +var clockTick int64 = 100 // Clock ticks are platform dependent, read from system config. + +func init() { + tick, err := sysconf.Sysconf(sysconf.SC_CLK_TCK) + if err != nil { + log.Printf("Can't get _SC_CLK_TCK; using 100 instead: %v\n", err) + return + } + log.Printf("sysconf(_SC_CLK_TCK) = %d", tick) + clockTick = tick +} diff --git a/ecsmetadata/client.go b/ecsmetadata/client.go new file mode 100644 index 0000000..2844a8c --- /dev/null +++ b/ecsmetadata/client.go @@ -0,0 +1,198 @@ +// Copyright 2021 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package ecsmetadata queries ECS Metadata Server for ECS task metrics. +// This package is currently experimental and is subject to change. +package ecsmetadata + +import ( + "context" + "encoding/json" + "io/ioutil" + "log" + "net/http" + "os" +) + +var endpoint string + +func init() { + const endpointEnv = "ECS_CONTAINER_METADATA_URI_V4" + endpoint = os.Getenv(endpointEnv) + if endpoint == "" { + log.Fatalf("%q environmental variable is not set, are you running this on ECS?", endpointEnv) + } +} + +type Client struct { + // httpClient is the client to use when making HTTP requests + // when set. Otherwise, an internal default client will be used. + httpClient *http.Client +} + +func NewClient(httpClient *http.Client) (*Client, error) { + if httpClient == nil { + httpClient = &http.Client{} + } + return &Client{httpClient: httpClient}, nil +} + +func (c *Client) RetrieveTaskStats(ctx context.Context) (map[string]*ContainerStats, error) { + out := make(map[string]*ContainerStats) + err := c.request(ctx, endpoint+"/task/stats", &out) + return out, err +} + +func (c *Client) RetrieveTaskMetadata(ctx context.Context) (*TaskMetadata, error) { + var out TaskMetadata + err := c.request(ctx, endpoint+"/task", &out) + return &out, err +} + +func (c *Client) request(ctx context.Context, uri string, out interface{}) error { + req, err := http.NewRequest("GET", uri, nil) + if err != nil { + return err + } + req = req.WithContext(ctx) + resp, err := c.httpClient.Do(req) + if err != nil { + return err + } + defer resp.Body.Close() + + body, err := ioutil.ReadAll(resp.Body) + if err != nil { + return err + } + return json.Unmarshal(body, out) +} + +type ContainerStats struct { + Name string `json:"name"` + ID string `json:"id"` + NumProcs float64 `json:"num_procs"` + + CPUStats struct { + CPUUsage struct { + TotalUsage float64 `json:"total_usage"` + PerCPUUsage []float64 `json:"percpu_usage"` + UsageInKernelMode float64 `json:"usage_in_kernelmode"` + UsageInUserMode float64 `json:"usage_in_usermode"` + } `json:"cpu_usage"` + SystemCPUUsage float64 `json:"system_cpu_usage"` + OnlineCPUs float64 `json:"online_cpus"` + ThrottlingData struct { + Periods float64 `json:"periods"` + ThrottledPeriods float64 `json:"throttled_periods"` + ThrottledTime float64 `json:"throttled_time"` + } `json:"throttling_data"` + } `json:"cpu_stats"` + + PreCPUStats struct { + CPUUsage struct { + TotalUsage float64 `json:"total_usage"` + PerCPUUsage []float64 `json:"percpu_usage"` + UsageInKernelMode float64 `json:"usage_in_kernelmode"` + UsageInUserMode float64 `json:"usage_in_usermode"` + } `json:"cpu_usage"` + SystemCPUUsage float64 `json:"system_cpu_usage"` + OnlineCPUs float64 `json:"online_cpus"` + ThrottlingData struct { + Periods float64 `json:"periods"` + ThrottledPeriods float64 `json:"throttled_periods"` + ThrottledTime float64 `json:"throttled_time"` + } `json:"throttling_data"` + } `json:"precpu_stats"` + + MemoryStats struct { + Usage float64 `json:"usage"` + MaxUsage float64 `json:"max_usage"` + Stats struct { + ActiveAnon float64 `json:"active_anon"` + ActiveFile float64 `json:"active_file"` + Cache float64 `json:"cache"` + Dirty float64 `json:"dirty"` + HierarchicalMemoryLimit float64 `json:"hierarchical_memory_limit"` + HierarchicalMemswLimit float64 `json:"hierarchical_memsw_limit"` + InactiveAnon float64 `json:"inactive_anon"` + InactiveFile float64 `json:"inactive_file"` + MappedFile float64 `json:"mapped_file"` + Pgfault float64 `json:"pgfault"` + Pgmajfault float64 `json:"pgmajfault"` + Pgpgin float64 `json:"pgpgin"` + Pgpgout float64 `json:"pgpgout"` + RSS float64 `json:"rss"` + RSSHuge float64 `json:"rss_huge"` + TotalActiveAnon float64 `json:"total_active_anon"` + TotalActiveFile float64 `json:"total_active_file"` + TotalCache float64 `json:"total_cache"` + TotalDirty float64 `json:"total_dirty"` + TotalInactiveAnon float64 `json:"total_inactive_anon"` + TotalInactiveFile float64 `json:"total_inactive_file"` + TotalMappedFile float64 `json:"total_mapped_file"` + TotalPgfault float64 `json:"total_pgfault"` + TotalPgmajfault float64 `json:"total_pgmajfault"` + TotalPgpgin float64 `json:"total_pgpgin"` + TotalPgpgout float64 `json:"total_pgpgout"` + TotalRSS float64 `json:"total_rss"` + TotalRSSHuge float64 `json:"total_rss_huge"` + TotalUnevictable float64 `json:"total_unevictable"` + TotalWriteback float64 `json:"total_writeback"` + Unevictable float64 `json:"unevictable"` + Writeback float64 `json:"writeback"` + } `json:"stats"` + Limit float64 `json:"limit"` + } `json:"memory_stats"` + + Networks map[string]struct { + RxBytes float64 `json:"rx_bytes"` + RxPackets float64 `json:"rx_packets"` + RxErrors float64 `json:"rx_errors"` + RxDropped float64 `json:"rx_dropped"` + TxBytes float64 `json:"tx_bytes"` + TxPackets float64 `json:"tx_packets"` + TxErrors float64 `json:"tx_errors"` + TxDropped float64 `json:"tx_dropped"` + } `json:"networks"` + + NetworkRateStats struct { + RxBytesPerSec float64 `json:"rx_bytes_per_sec"` + TxBytesPerSec float64 `json:"tx_bytes_per_sec"` + } `json:"network_rate_stats"` +} + +// TODO(jbd): Add storage stats. + +type TaskMetadata struct { + Cluster string `json:"Cluster"` + TaskARN string `json:"TaskARN"` + Family string `json:"Family"` + Revision string `json:"Revision"` + DesiredStatus string `json:"DesiredStatus"` + KnownStatus string `json:"KnownStatus"` + AvailabilityZone string `json:"AvailabilityZone"` + LaunchType string `json:"LaunchType"` + Containers []struct { + DockerID string `json:"DockerId"` + Name string `json:"Name"` + DockerName string `json:"DockerName"` + Image string `json:"Image"` + ImageID string `json:"ImageID"` + Labels map[string]string `json:"Labels"` + DesiredStatus string `json:"DesiredStatus"` + KnownStatus string `json:"KnownStatus"` + Type string `json:"Type"` + ContainerARN string `json:"ContainerARN"` + } `json:"Containers"` +} diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..3130bd2 --- /dev/null +++ b/go.mod @@ -0,0 +1,8 @@ +module github.com/prometheus-community/ecs_exporter + +go 1.16 + +require ( + github.com/prometheus/client_golang v1.11.0 + github.com/tklauser/go-sysconf v0.3.9 // indirect +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..eda3319 --- /dev/null +++ b/go.sum @@ -0,0 +1,181 @@ +cloud.google.com/go v0.34.0 h1:eOI3/cP2VTU6uZLDYAoic+eyzzB9YyGmJ7eIjl8rOPg= +cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc= 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http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package main + +import ( + "flag" + "fmt" + "log" + "net/http" + + "github.com/prometheus-community/ecs_exporter/ecscollector" + "github.com/prometheus-community/ecs_exporter/ecsmetadata" + "github.com/prometheus/client_golang/prometheus" + "github.com/prometheus/client_golang/prometheus/promhttp" +) + +var addr string + +func main() { + flag.StringVar(&addr, "addr", ":9779", "The address to listen on for HTTP requests.") + flag.Parse() + + client, err := ecsmetadata.NewClient(nil) + if err != nil { + log.Fatalf("Error creating client: %v", err) + } + prometheus.MustRegister(ecscollector.NewCollector(client)) + + http.Handle("/", http.RedirectHandler("/metrics", http.StatusMovedPermanently)) + http.Handle("/metrics", promhttp.Handler()) + http.HandleFunc("/health", func(w http.ResponseWriter, r *http.Request) { + w.WriteHeader(http.StatusOK) + fmt.Fprint(w, "ok") + }) + + log.Printf("Starting server at %q", addr) + log.Fatal(http.ListenAndServe(addr, nil)) +}